(E)-4-Benzylidene-2-methyloxazol-5(4H)-one CAS 143417-47-4
| CAS No. | 143417-47-4 |
| Molecular Formula | C11H9NO2 |
| Molecular Weight | 187.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(E)-4-Benzylidene-2-methyloxazol-5(4H)-one (CAS 143417-47-4), molecular formula C11H9NO2 and molecular weight 187.19 g/mol, is a CATO reference standard with documented purity and traceability.
(E)-4-Benzylidene-2-methyloxazol-5(4H)-one (C11H9NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (E)-4-Benzylidene-2-methyloxazol-5(4H)-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H9NO2 |
| Molecular Weight | 187.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 1 |
Related E Standards
- (4Z)-4-Benzylidene-3-methylisoxazol-5(4H)-one (CAS 36298-55-2)
- (Z)-4-benzylidene-2-methyloxazol-5(4H)-one (CAS 38879-46-8)
- 4-Benzylidene-2-methyl-2-oxazolin-5-one (CAS 881-90-3)
- N'-benzylidene-2-cyanoacetohydrazide (CAS 180793-11-7)
- (E)-3-Benzylidene-4-vinyltetrahydrofuran (CAS 616230-39-8)
- (Z)-2-benzylidene-4-methylpent-4-enal (CAS 54979-65-6)
- N-Benzylidene-5-methylisoxazol-3-amine (CAS 112633-37-1)
- N-Benzylidene-2,2-dimethoxyethanamine (CAS 54879-74-2)
Recommended Standards
- 5-Methylisoquinoline-1-carboxylic acid (CAS 1429787-92-7)
- Sunitinib Impurity 43 (CAS 14352-65-9)
- 3-(Methoxycarbonyl)-1-pyrrolidineacetic acid (CAS 1427195-40-1)
- 2-(Methylamino)naphthalene-1,4-dione (CAS 14423-00-8)
- 1-(1-Amino-5-(m-tolyl)-7,8-dihydro-6H-cyclopenta[d]thieno[2,3-b]pyridin-2-yl)ethan-1-one (CAS 866018-04-4)
- Methyl 2-(4-bromo-3-cyano-5-formylphenyl)acetate (CAS 1805190-08-2)
- 2-(5-Cyano-2-methoxyphenyl)acetic acid (CAS 325124-98-9)
- 3-(3-Aminophenyl)phenol (CAS 779341-19-4)
- Methyl ((1H-benzo[d][1,2,3]triazol-1-yl)(phenyl)methyl)carbamate (CAS 149681-90-3)
- 4-(Difluoromethyl)-6-methoxy-3-methylpyridin-2-amine (CAS 1806820-13-2)
- 2-Methyl-5-oxohexanoic acid (CAS 54248-02-1)
- 1-Bromo-2-((phenylsulfonyl)methyl)benzene (CAS 92022-50-9)
- Sugammadex Impurity 49 (CAS 779318-36-4)
- Pancreatic Polypeptide (31-36), amide, human (CAS 74012-13-8)
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